04-30 Multiple client handling

When IPS servers are discovered, I iterate over their adresses and create a new client instance for each single server object. This object is then stored in a vector.

Problem:

I cannot read the RSSI of several peer devices using my current code. I can get the RSSI of a single client connection object as often as I want, but it does not work when I try to iterate over more than one object. I got the idea of iterating over client objects from this post by one of the BLEClient developers. He indicates that it should be possible to create a connection object for each server and then use it later for reading values. My code does not work though.

Solutions

Task for every client

According to the same dev that wrote the post referenced above, it should be possible to create a task handle for every BLE Client. I do not think it is worth pursuing this though, since chegewara says that the arduino IDE ESP32 core only allows 3 simultaneous connections. If this is the case, then I can just scrap the idea with the BLEClient objects for simultaneous connections. The next solution is based on the implications of this discovery.

Reconnect every single time.

Since I cannot handle more than three clients at once, I can also just connect, read rssi and disconnect subsequently. Then I do not have to worry about juggling around with BLEClient pointers and it is very likely to work. The reason I didnt go with this was because I thought it wasnt very pretty. But now it seems to be the easiest option.

Conclusion

I will go ahead with recurrent connect-read-disconnect operations for every server that I have saved. I will be very careful with disconnecting and deallocating memory so that there are no leaks.

3D model of case

I also designed a case to hold the battery and esp32 on the stands I constructed yesterday. Here is a screenshot: